Compilare: main.cpp: In function 'int main()': main.cpp:23:41: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 23 | if (S[i].size() > lnMax) | ~~~~~~~~~~~~^~~~~~~ main.cpp:27:41: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 27 | if (S[i].size() == lnMax) | ~~~~~~~~~~~~^~~~~~~~ main.cpp:47:51: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | for (int k = 0; k < S[j].size(); ++k) | ~~^~~~~~~~~~~~~ main.cpp:51:43: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | if (index >= S[i].size()) | ~~~~~~^~~~~~~~~~~~~~